#include<stdio.h>
#include<stdlib.h>
int main(){
    int n;
    scanf("%d",&n);
    if(n==0){
        printf("1\n");
    }else{
        int temp = abs(n);
        int modified_n=0;
        int power_of_10=1;
        while(temp>0){
            int digit  = temp%10;
            if(digit == 0){
                digit=1;
            }
            modified_n+=digit*power_of_10;
            power_of_10*=10;
            temp/=10;
        }
        if(n<0){
            printf("-");
        }
        printf("%d\n",mdified_n);
    }
    return 0;
}